/// <summary>
/// Compares the peeked state and the previous state and fires events if the state has changed.
/// This method calls method <see cref="PeekState"/> automatically if the state is not peeked.
/// </summary>
public void FetchState()
{
lock (_syncRoot)
{
if (_peekedState == null)
{
PeekState();
}
byte[] newState = _peekedState;
_peekedState = null;
if (newState.SequenceEqual(_committedState))
{
return;
}
byte[] oldState = GetState();
Array.Copy(newState, _state, _state.Length);
Array.Copy(newState, _committedState, _committedState.Length);
Log.Verbose("'" + Id + "' fetched different state (" +
ByteExtensions.ToString(oldState) + "->" +
ByteExtensions.ToString(newState) + ").");
StateChanged?.Invoke(this, new IOBoardStateChangedEventArgs(oldState, newState));
}
}